Updated SBE minimum

README.md

@@ -129,7 +129,7 @@ Additionally you may purchase an [premium support](https://stalw.art/support) to
 
 ## Sponsorship
 
-Your support is crucial in helping us continue to improve the project, add new features, and maintain the highest level of quality. By becoming a sponsor on [Open Collective](https://opencollective.com/stalwart), you help fund the development and future of Stalwart Mail Server. As a thank-you, sponsors who contribute $10 per month or more will automatically receive a [Small Business Edition](https://stalw.art/small-business/) license, which includes all the powerful features of the [Enterprise edition](https://stalw.art/enterprise/).
+Your support is crucial in helping us continue to improve the project, add new features, and maintain the highest level of quality. By [becoming a sponsor](https://opencollective.com/stalwart), you help fund the development and future of Stalwart Mail Server. As a thank-you, sponsors who contribute $5 per month or more will automatically receive a [Small Business Edition](https://stalw.art/small-business/) license, which includes all the powerful features of the [Enterprise edition](https://stalw.art/enterprise/).
 
 These are some of our open-source sponsors: